Am I in the wrong for refusing to continue offering free childcare for my stepdaughter?

One night, during a heated family dinner, my stepson took a jab at me. “If this were your own daughter’s child, you’d forgive and move on.”
The room fell silent. I set down my fork, hands trembling.

“How dare you,” I whispered, tears stinging my eyes. “How dare you suggest I love any of my grandchildren less than others. I’ve poured my heart and soul into this family for decades. I’ve loved your children as my own. But love doesn’t mean accepting abuse.”
“Mom’s right,” my daughter Sarah spoke up, her voice fierce. “You all saw how Sam treated her. How Alice enabled it. Would you let someone treat your mother that way?”

My stepson’s words stung, but they weren’t true. I’d always treated my stepkids and biological kids equally. The difference was respect. My own kids and their spouses respected me. But Alice and Sam didn’t.

Ellie eventually returned to daycare, and I felt a weight lift off my shoulders. I could finally enjoy my time with my other grandkids without Sam’s negativity hanging over me.

One morning, while watching my grandson paint, he looked up at me with serious eyes.
“Grandma,” he said, “why doesn’t cousin Ellie come anymore?”